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The amount of text generated daily on social media is gigantic and analyzing this text is useful for many purposes. To understand what lies beneath a huge amount of text, we need dependable and effective computing techniques from…

Information Retrieval · Computer Science 2025-08-04 Ngozichukwuka Onah , Nadine Steinmetz , Hani Al-Sayeh , Kai-Uwe Sattler

Extracting topics from text has become an essential task, especially with the rapid growth of unstructured textual data. Most existing works rely on highly computational methods to address this challenge. In this paper, we argue that…

Computation and Language · Computer Science 2025-11-07 Salma Mekaoui , Hiba Sofyan , Imane Amaaz , Imane Benchrif , Arsalane Zarghili , Ilham Chaker , Nikola S. Nikolov

In this paper, we focus on the problem of unsupervised image-sentence matching. Existing research explores to utilize document-level structural information to sample positive and negative instances for model training. Although the approach…

Computer Vision and Pattern Recognition · Computer Science 2021-04-07 Zejun Li , Zhongyu Wei , Zhihao Fan , Haijun Shan , Xuanjing Huang

Topic models provide a useful method for dimensionality reduction and exploratory data analysis in large text corpora. Most approaches to topic model inference have been based on a maximum likelihood objective. Efficient algorithms exist…

Machine Learning · Computer Science 2012-12-20 Sanjeev Arora , Rong Ge , Yoni Halpern , David Mimno , Ankur Moitra , David Sontag , Yichen Wu , Michael Zhu

Topic-controllable summarization is an emerging research area with a wide range of potential applications. However, existing approaches suffer from significant limitations. For example, the majority of existing methods built upon recurrent…

Computation and Language · Computer Science 2024-04-18 Tatiana Passali , Grigorios Tsoumakas

While most topic modeling algorithms model text corpora with unigrams, human interpretation often relies on inherent grouping of terms into phrases. As such, we consider the problem of discovering topical phrases of mixed lengths. Existing…

Computation and Language · Computer Science 2014-11-20 Ahmed El-Kishky , Yanglei Song , Chi Wang , Clare Voss , Jiawei Han

The growing need to analyze large collections of documents has led to great developments in topic modeling. Since documents are frequently associated with other related variables, such as labels or ratings, much interest has been placed on…

Machine Learning · Statistics 2018-08-20 Filipe Rodrigues , Mariana Lourenço , Bernardete Ribeiro , Francisco Pereira

Existing studies on self-supervised speech representation learning have focused on developing new training methods and applying pre-trained models for different applications. However, the quality of these models is often measured by the…

Audio and Speech Processing · Electrical Eng. & Systems 2024-01-18 Alexander H. Liu , Sung-Lin Yeh , James Glass

The paper deals with the adaptation of a new measure for the unsupervised feature selection problems. The proposed measure is based on space filling concept and is called the coverage measure. This measure was used for judging the quality…

Machine Learning · Statistics 2017-06-28 Mohamed Laib , Mikhail Kanevski

Topic models uncover latent thematic structures in text corpora, yet evaluating their quality remains challenging, particularly in specialized domains. Existing methods often rely on automated metrics like topic coherence and diversity,…

Computation and Language · Computer Science 2026-03-03 Thibault Prouteau , Francis Lareau , Nicolas Dugué , Jean-Charles Lamirel , Christophe Malaterre

Transformer-based Neural Language Models achieve state-of-the-art performance on various natural language processing tasks. However, an open question is the extent to which these models rely on word-order/syntactic or word…

Computation and Language · Computer Science 2024-03-05 Vasudevan Nedumpozhimana , John D. Kelleher

Self-supervised learning has significantly improved the performance of many NLP tasks. However, how can self-supervised learning discover useful representations, and why is it better than traditional approaches such as probabilistic models…

Computation and Language · Computer Science 2023-03-01 Zeping Luo , Shiyou Wu , Cindy Weng , Mo Zhou , Rong Ge

Entity resolution is a widely studied problem with several proposals to match records across relations. Matching textual content is a widespread task in many applications, such as question answering and search. While recent methods achieve…

Databases · Computer Science 2021-12-17 Naser Ahmadi , Hansjorg Sand , Paolo Papotti

Existing solutions to zero-shot text classification either conduct prompting with pre-trained language models, which is sensitive to the choices of templates, or rely on large-scale annotated data of relevant tasks for meta-tuning. In this…

Computation and Language · Computer Science 2023-05-26 Chaoqun Liu , Wenxuan Zhang , Guizhen Chen , Xiaobao Wu , Anh Tuan Luu , Chip Hong Chang , Lidong Bing

Topic modeling analyzes a collection of documents to learn meaningful patterns of words. However, previous topic models consider only the spelling of words and do not take into consideration the homography of words. In this study, we…

Computation and Language · Computer Science 2024-10-04 Takashi Shibuya , Takehito Utsuro

Graph-based semi-supervised learning has proven to be an effective approach for query-focused multi-document summarization. The problem of previous semi-supervised learning is that sentences are ranked without considering the higher level…

Computation and Language · Computer Science 2014-01-03 Jiwei Li , Sujian Li

Probabilistic topic modeling is a popular and powerful family of tools for uncovering thematic structure in large sets of unstructured text documents. While much attention has been directed towards the modeling algorithms and their various…

Information Retrieval · Computer Science 2014-12-01 Samuel Rönnqvist , Xiaolu Wang , Peter Sarlin

Overcomplete latent representations have been very popular for unsupervised feature learning in recent years. In this paper, we specify which overcomplete models can be identified given observable moments of a certain order. We consider…

Machine Learning · Computer Science 2013-08-14 Animashree Anandkumar , Daniel Hsu , Majid Janzamin , Sham Kakade

Topic models are typically evaluated with respect to the global topic distributions that they generate, using metrics such as coherence, but without regard to local (token-level) topic assignments. Token-level assignments are important for…

Information Retrieval · Computer Science 2019-05-31 Jeffrey Lund , Piper Armstrong , Wilson Fearn , Stephen Cowley , Courtni Byun , Jordan Boyd-Graber , Kevin Seppi

Mining a set of meaningful and distinctive topics automatically from massive text corpora has broad applications. Existing topic models, however, typically work in a purely unsupervised way, which often generate topics that do not fit…

Computation and Language · Computer Science 2020-01-29 Yu Meng , Jiaxin Huang , Guangyuan Wang , Zihan Wang , Chao Zhang , Yu Zhang , Jiawei Han
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